Sampling-tube for calorimeters.



C. C. THOMAS. SAMPLING TUBE FOR UALORIMETBRS.

` APPLICATION rum JUNI: 1. 1914.

Patented Aug. 25, 1914,

y UNITED sTATEs PATENT oEEicE.

cam. o. Tetonas, or Ronan-n Tann, nanrtann.

salentino-Turn ron. eALoEIMETEEs.

inioaars.

Specification of Letters Patent.

Patented Aug. 25, 1914.

.application led June 1:19PM. Serial No. 842,215.

, determining the percentage of moisture ot the steam passing through a'pipe at diderent points in the cross section of the said pipe.

The principal object of the invention is I to provide an improved device of this character adapted to be used in connection with calorimeters or other suitable measuring instruments, and arranged to establish communication between such instruments and various successive points in the cross section of a steam passage or other conductor of substances, the object being to obtain representative samples of the substance passing through the pipe, and to conduct such samples to the attached instruments.

llith the foregoing and otherobjects in view, the invention consists in general et certain novel features oit construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and speciically claimed.

ln the accompanying drawings, like characters of reference indicate like parts in the severalviews, and Figure `1 is a transverse section through a pipe showing the device applied thereto. Fig. 2 is asection on the line 2-2 of Fig. 1 showing the device removed from the pipe. Fig. 3 is aside elevation, partly in section of a modified form of the device.

l ln theembodiment of the invention shown l in Figs. 1 and 2 there is displayed a pipe 10v to which the device is applied. This pipe 10 is provided von its upper side with a threaded opening 11 whereinis secured a nipple 12 carrying a pipe-fitting 13. The nipple 12 is provided with a socket v14: opening into the pipe 10 and 'in this socket 14 'is screwed a pipe 15 closed at its lower end and provided with a longitudinally extending slot 16. Revolubly mounted. in the pipe 15 is a tube ,17 having a splral slot `18 formed therein so that as the tube 17 is rotated, communication is established betweenl the interior of the pipe 10 and a certain point in the length of the tube 17, the point being determined by the position of said tube. On the upper end oi.E this tube is provided a bevel gear 19 wherewith meshes a bevel gear ,2O mounted on a shalit 21 extend-v ing through a glandtwhich is indicated generally at 22 and which is oit' the ordinary variety. @n the shatt 21 is a hand wheel 23 carrying an index linger or marker 2d arranged to travel over -a dial 25 provided on the gland 21 so that the position of 'thetube 17 and its slot l@ may be thereby indicated. ln Fig. 3 the slot 18 is modified by being formed longitudinally of the tube 17 in circumferentially displaced portions as indicated at 26, but the result is the same in both cases since the rotation of the tube 17 within the tube 16 produces a lower or higher communication between the pipe 10 and the interior ct said pipe 17.

ln use, the degree of moisture in the steam or other substance passing any point along the slot `16'n1ay be determined by establishing communication between the interior of the pipe 10 and the measuringinstruments without the. pipe by rotating the tube 17 to a desired point of communication, and then taking observations on the said measuring instruments, such as steam calorimeters and the like. Y

There has 'thus been provided a simple and eiiicient device of the kind described and of the character specified.

lt will be obvious that many minorv changes ma be made in ,the form and construction o this invention without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described, but it is desired to include 'all such as come properly within the scope claimedva tube adapted l'for insertion in a steam pipe, saidjtubeb'eingprovided with alon- '10s" Having thus'described the invention, what gitudinal slot'extendmg along one side there of, a; secondy ltube lrevolubly fitted within thersttube, said second tube. having spirally :disposed port commumcation with said slot," ,and means't'o rotate the second tubel within- .the first tube.

1 2. .In adevice of the-character described, l v

a tube adapted for insertion-ina steampipe1` said tube being provided with a longitudinal slot extending along one side thereof,

3. In a device of the character-described,

a T fitting open at its upper end, a nipple secured 1n the lower end of said T tting,

a tubehaving its upper end secured in said nipple andv provided, with a longitudinal slot, a second`tubejttingwithin the rst tube and provided with a spirallyvdisposed slot,4 a bevel v`gear mounted on the second 15 tube Y.withinsuid 'fitting,va. shaft adapted for hand manipulation extending laterally into q l said fitting, and a bevel gear'mountedin said shaft and engaging the first mentionedy bevel gear. {In testimony whereo I afiix my Signa.- ture in presence of two witnesses. CARL C. THOMAS. Witnesses: 'p

f- E. WALTON BREWINGTON, HowAnp D. ADAMS. 

